Question

作业是制作猜谜游戏，其中参数是答案。最后如果这个人说得对，它会打印一个祝贺声明并返回它所尝试的次数，如果他们输入quit，它会显示答案并尝试== -1。除此之外，它一直循环，直到他们得到正确的答案。

def guessNumber(num):
    tries = 1
    while tries > 0:
        guess = input("What is your guess? ")
        if guess == num:
            print ("Correct! It took you" + str(tries)+ "tries. ")
            return tries
        elif guess == "quit":
            tries == -1
            print ("The correct answer was " + str(num) + ".")
            return tries
        else:
            tries += 1

当我运行它时，无论我放入它，只是一直问我猜测。

Answer 1

因为你调用变量num所以我猜它是一个整数，你检查整数和字符串之间的相等性，所以它永远不是True。尝试比较时将num更改为str（num），所以：

def guessNumber(num):
    tries = 1
    while tries > 0:
        guess = input("What is your guess? ")
        if guess == str(num):
            print ("Correct! It took you {0} tries. ".format(tries))
            return tries
        elif guess == "quit":
            tries = -1
            print ("The correct answer was {0}.".format(num))
            return tries
        else:
            tries += 1

Answer 2

代码是否正确缩进？您定义的函数的主体由缩进级别决定。

在您粘贴的示例中，由于def之后的行具有较少的缩进，因此该函数的主体是空的＆＃39;。

Indenting code is important in python

此外，要为变量分配一个值，您必须使用单个＆＃39; =＆＃39;，所以：

tries == -1

应该是

tries = -1

如果要将-1值分配给该变量。

我的while循环永远不会达到条件状态并保持循环

2 个答案: